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Kruka [31]
3 years ago
14

Rationalize the denominator (-7x^2)/√(6x-6)

Mathematics
1 answer:
Alex777 [14]3 years ago
5 0
\bf \cfrac{-7x^2}{\sqrt{6x-6}}\cdot \cfrac{\sqrt{6x-6}}{\sqrt{6x-6}}\implies \cfrac{-7x^2\sqrt{6x-6}}{\sqrt{(6x-6)^2}}\implies \cfrac{-7x^2\sqrt{6x-6}}{6x-6}

the idea being, getting rid of the pesky radical at the bottom, simply multiply it by something that'd raise it to the root, so it gets out :)
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olya-2409 [2.1K]
Average = Mean

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To do these types of division, ignore the decimal and add a 0 at the end.

So we can do:
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3 years ago
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